19828809

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 96

約数和(自身を含む): 40255488

約数和(自身を除く): 20426679

約数列:

[1, 3, 7, 9, 11, 13, 21, 31, 33, 39, 63, 71, 77, 91, 93, 99, 117, 143, 213, 217, 231, 273, 279, 341, 403, 429, 497, 639, 651, 693, 781, 819, 923, 1001, 1023, 1209, 1287, 1491, 1953, 2201, 2343, 2387, 2769, 2821, 3003, 3069, 3627, 4433, 4473, 5467, 6461, 6603, 7029, 7161, 8307, 8463, 9009, 10153, 13299, 15407, 16401, 19383, 19809, 21483, 24211, 25389, 28613, 30459, 31031, 39897, 46221, 49203, 58149, 71071, 72633, 85839, 91377, 93093, 138663, 169477, 200291, 213213, 217899, 257517, 279279, 314743, 508431, 600873, 639639, 944229, 1525293, 1802619, 2203201, 2832687, 6609603, 19828809]

約数ペア:

[(1, 19828809), (3, 6609603), (7, 2832687), (9, 2203201), (11, 1802619), (13, 1525293), (21, 944229), (31, 639639), (33, 600873), (39, 508431), (63, 314743), (71, 279279), (77, 257517), (91, 217899), (93, 213213), (99, 200291), (117, 169477), (143, 138663), (213, 93093), (217, 91377), (231, 85839), (273, 72633), (279, 71071), (341, 58149), (403, 49203), (429, 46221), (497, 39897), (639, 31031), (651, 30459), (693, 28613), (781, 25389), (819, 24211), (923, 21483), (1001, 19809), (1023, 19383), (1209, 16401), (1287, 15407), (1491, 13299), (1953, 10153), (2201, 9009), (2343, 8463), (2387, 8307), (2769, 7161), (2821, 7029), (3003, 6603), (3069, 6461), (3627, 5467), (4433, 4473)]